Dendrimers as novel class of polymeric corrosion inhibitors: A review

doi:10.17675/2305-6894-2018-7-4-8

Cited by 2 publications

(2 citation statements)

References 37 publications

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“…The charge transfer resistance, R t values are calculated from the difference in impedance at lower and higher frequencies, as suggested by several authors [26][27][28][29][30][31].…”

Section: Iii6 Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Environmentally friendly inhibitor of the corrosion of mild steel: Commercial oil of Eucalyptus

Hafez¹,

Mokhtari²,

Elmsellem³

et al. 2019

Int. J. Corros. Scale Inhib.

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A study assessing plant extracts as green corrosion inhibitors is important because of the potential cost effective and environmental benefits. This study employed a strategy to evaluate the effectiveness these molecules against corrosion of mild steel in acid media. Many plant extracts have been used as corrosion inhibitors of iron or steel in acidic media. This research aims to examine the effects of commercial oil of Eucalyptus on inhibition of corrosion with mild steel in hydrochloric acid by means of gravimetric, potentiodynamic polarization and electrochemical impedance spectroscopic measurements. The results of the polarization curves show that the corrosion current density decreases from 3618 A/cm 2 to 87 A/cm 2 with the addition of the Eucalyptus inhibitor. The charge transfer resistance increases from 17 Ohm•cm 2 to 185 Ohm•cm 2 in the electrochemical impedance spectrum after the addition of the oil Eucalyptus inhibitor in the more concentrated solutions It is found that the adsorption of our green inhibitor on steel surface obeys the Langmuir adsorption isotherm equation. The inhibition efficiency was found to be increased with increasing immersion time of samples in the solution. The polarization plots indicate that the studied Eucalyptus inhibitor affects both the anodic metal dissolution, and the catholic hydrogen evolution acting as a mixed type inhibitor.

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“…The charge transfer resistance, R t values are calculated from the difference in impedance at lower and higher frequencies, as suggested by several authors [26][27][28][29][30][31].…”

Section: Iii6 Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Environmentally friendly inhibitor of the corrosion of mild steel: Commercial oil of Eucalyptus

Hafez¹,

Mokhtari²,

Elmsellem³

et al. 2019

Int. J. Corros. Scale Inhib.

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“…Tafel slopes showed that the added inhibitor blocked the MS surface, indicating an inactivation towards corrosion and suggesting geometric blocking effect [25]. Moreover the addition of AY15 inhibitor indicates that the molecules of the inhibitor adsorbed on the MS surface [26] thereby reducing the polarization of the MS specimen i.e. reduces the conversion of the metal into metal ions.…”

Section: Tafel Plots Measurementsmentioning

confidence: 99%

Corrosion inhibition studies of new synthesized 1,4-dioctyl-6-methyl-1,4-dihydroquinoxaline-2,3-dione on mild steel in 1.0 M HCl solution using gravimetric and electrochemical techniques supported by theoretical DFT calculations

Zouitini¹,

Rodi²,

Ouzidan³

et al. 2019

Int. J. Corros. Scale Inhib.

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The inhibition performance of 1,4-dioctyl-6-methyl-1,4-dihydroquinoxaline-2,3-dione (AY15) was studied as an inhibitor of mild steel in 1.0 M HCl solution at 308 K using experimental methods and theoretical calculations. 1,4-dioctyl-6-methyl-1,4-dihydroquinoxaline-2,3-dione (AY15) was synthesized and identified by elemental analysis, IR, 1 H NMR and 13 C NMR spectroscopy. The corrosion inhibition of (AY15) in 1.0 M HCl solution for mild steel was evaluated using weight loss and electrochemical techniques. The weight loss results show that inhibition efficiency increasing with increasing AY15 concentration and maximum value was obtained at 10-3 M concentration. Polarization analysis suggests that compound act as a mixed type of inhibitor. EIS data showed that in the presence of inhibitor, transfer resistance increased and C dl decreased due adsorption of inhibitor at the metal surface. It was found also that the adsorption of the inhibitor on the mild steel surface obeys the Langmuir isotherm model. The weight loss, electrochemical and Density Functional Theory (DFT) calculations are in good agreement.

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Dendrimers as novel class of polymeric corrosion inhibitors: A review

Cited by 2 publications

References 37 publications

Environmentally friendly inhibitor of the corrosion of mild steel: Commercial oil of Eucalyptus

Environmentally friendly inhibitor of the corrosion of mild steel: Commercial oil of Eucalyptus

Corrosion inhibition studies of new synthesized 1,4-dioctyl-6-methyl-1,4-dihydroquinoxaline-2,3-dione on mild steel in 1.0 M HCl solution using gravimetric and electrochemical techniques supported by theoretical DFT calculations

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